Closed-Loop Interferometric Fiber-Optic Gyroscope with Unpolarized Light
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This article deals with utilizing special techniques to improve parameters of interferometric fiber-optic gyroscope (I-FOG) using unexpensive single-mode (SM) fiber and based on all-fiber components. Firstly, it was shown that polarizer must be used to compensate for depolarizing unperfections. Optimization of Er-doped superfluorescent fiber source (SFS) greatly increased SNR of the sensor. Finally, solution for closed-loop operation with slow piezoelectric phase modulator was found yielding significant extension of measurement range as well as its linearity.
KeywordsClosed-loop unpolarized fiber-optic gyroscope, all-fiber optical gyro, superfluorescent fiber source, polarizer, Lyot depolarizer, depolarized light modulation, piezoelectric phase modulator
Document typePeer reviewed
Document versionxmlui.vut.verze.Publishers's version
SourceProceedings of the 22nd Conference STUDENT EEICT 2016. s. 181-183. ISBN 978-80-214-5350-0
- Student EEICT 2016